Grain  sepaeator



2 Sheets-Sheet 1.

(No Model.)

J. F. KOsGrHl GRAIN s PARATQR.

ATTORNEYS (No Model.) 2 Sheets-Sheet 2.

J. F. KOCH.

GRAIN 'SEPARATOR. No. 606,437. v Patented'June 7, 1898.

. lm/mron ATTORNEYS.

' WITNESSES:

ucnms pzrzns 00., Pnoruu'mou WASHINGTON. n. c.

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JACOB F. KOCH OF NEW ATHENS, ILLINOIS, ASSIGNOR TO HIMSELF, AND

I THE HARRISON MACHINE WORKS, OF BELLEVILLE, ILLINOIS.

c RAI N-S EPARATOR.

SPECIFICATION forming part of Letters .Patent No. 605,437, dated June 7, 1898. Application filed September 12, 1896. Serial No. 605,580, (No model.)

To all whom-it may concern.- rear ofv this revoluble straw-beater and below Be it known that I, JACOB F. KOCH, of New the same is arranged a lifting-rack F, having I Athens, in the county of St. Clair and State a swinging motion and having its prongs exof Illinois, have invented certain new and use tending between the notched strips D as 55 5 ful Improvements in Grain- Separators, of plainly indicated in Figs. 1 and 2. The free which the following is a full, clear, and exact end of the rack F discharges the straw upon I description. the first revoluble straw-lifter G, which tosses The invention relates to grain-separators thestraw over uponasecond revoluble strawsuch as shown and described in the Letters lifter I-I, located in. the rear of the lifter G 60 I Patent of the United States, No. 180,050, and somewhat above the same. (See Fig. 1.) granted to Theophilus Harrison and W. O. I A series of straw-lifters H H II H H are Buchanan on March 0, 1877. arranged one behind the other next to the The object of the present invention is to lifter H, and all are revoluble and preferably provide certain new and useful improvements located at different horizontal planes with an o 5 in grain-separators, whereby a thorough and increase in diameter, as indicated in Fig. 1. complete separation of the grain, chaff, and The rearmost lifter H has its axis preferably strawis obtained without any waste Whatever somewhat below the axis of the preceding of grain. lifter H so that thestraw receives a down- I The invention consists principally of a ward as wellas rearwardimpetus. The sev- 7o straw-conveying mechanism elevated overthe eral lifters G H Hl-l H H H are formed separating-pans to carry the straw bodily with anydesirable number of wings, the first clear of the said pans and independently of lifter Gbeing preferably formed with four the chaff and grain. I I wings and the other ones with but two wings,

The invention also consists of certain parts as indicated in' the drawings. 75 and details and combinations of the same, as -When the machine is in operation, the will be fully described hereinafter and then grain and chaff after passing the cylinder B pointed out in the claims. I and concave O are thrown upon the strips D Reference is to be had to the accompanying in the pans D and carried by their motion to drawings, forming a part of this specification, the lifting-rake F, operating with its prongs 8o- 0 in which similar characters of reference'indi-' between the said strips. The lifting-rake F cate corresponding parts in both the figures. lifts and moves the straw above the strips Figure 1 is a sectional side elevationof the after itis moved and spread by the revolving improvement, and Fig. 2 is a sectional plan straw-beaterE, which, in conjunction with view of the same on the line 2 2 of Fig. 1'. thes'aid lifting-rake, causes the straw to pass 85 3 5 The improved grain-separator in the form upward and rearward upon the first revolving of a threshing-machine is-providedwith a straw-lifter G, which throws the straw over housing A, a threshing or beating cylinder B, and rearwardly upon the next lifter H, which operating in conjunction with a toothed con in turn discharges the straw over upon the cave O in the usual manner for threshing the followinglifter H and this operation is re 0 1 4o grain, the material falling into the first seppeated by the following lifters, so that the arating-pan D, discharging at its rear" end straw is carried in the upper part of the housinto a second separating-pan D, discharging ingA asuitable distance above the separatinto a separating-pan D in the usual maning-pans D D Thus the several straw-liftner. The several separating-pans are pro ers I'I H H I1 850., form a straw-conveying 5 vided with notched longitudinal strips D for mechanism elevated a suitable distance moving the chaff and short straw rearwardly. above the separating pans and serving to Above the first separating-pan D and'in carrythe straw bodily clear of the said pans the rear of the threshing-cylinder B is arand independently of the chaff, short straw, ranged a revoluble straw-beater E, provided and grain passing along thelsaid separating- I00 with wings E, from which project teeth E pans. r

as plainly indicated in the drawings. In the It is evident that when the straw is bodily r p O lifted into the upper part of the housing and carried rearward, as described, then the wheat and chaff are completely separated from the straw and dropped to the bottom of the pans,

and hence do not become mingled with themass of straw.

The revoluble straw-beater E is preferably run slower than the cylinder B, so as to check any flying grain from the cylinder and also to check the momentum of the straw. The teeth E on the said straw-beater serve to pull and assist the straw up and upon the rake F,

but the teeth are bent rearwardly to let go of the straw in its rearward passage. The beater thus has three functions. First, it checks the momentum of the straw, it stops the flying grain thrown by the cylinder during the threshing operation, and it pulls and tears tate, and draw out the strawinto a thin sheet to permit any grain carried by the straw to drop down into the separating-pan below. The lifters, owing to having increased diameters, accelerate the passage of the straw from one to the other. It is expressly understood that these lifters do not beat down the straw, but lift the same and shake out any grain contained in the straw and at the same time move the straw rearward and out of the machine. I do not limit myself to the number of lifters employed or to the form given to the same. It is also understood that the first lifter G gives an uplifting and pulling action at the same angle to the top of the second or next lifter H and at the same time permits the grain contained in the straw to fall down into the pan D. It is understood that during the operation of these lifters in .moving the straw rearwardly in theupper part of the housing the grain, chaff, and short straws are carried toward the windmill and shoe by the separating-pans. The first lifters rotate somewhat slower than the following ones, so that the straw is entirely relieved of all the momentum received during its passage through the cylinder.

The straw-lifters are rotated from a suitable part of the thresher, preferably by'abelt or a sprocket-chain from a pnlleyor a sprocketwheel that drives the separating-pans. The lifters may have their speed gradually increased singly or in groups, so as to give constant agitation and pulling apart of the straw during its rearward movement.

It will be seen that ample room is given for the action of the separating apparatus in the pans and an unobstructed blast from the fan through the throats. The action of this blast is not impeded by the body of straw, as heretofore,and readily passes through the throats, openings, and riddles of the shoe and enables a better cleaning to be done with less blast from the fan and without blowing off or wasting the grain.

The term separating-pan, referred to in the specification, is used as a generic expression to define any approved separating-pan or analogous mechanism.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a grain-separator, the combination of a threshing-cylinder and concave, a vibrating separating-pan located below the cylinder and concave and receiving the straw and grain from the cylinder and concave, a strawbeater located above the separating-pan in rear of and adjacent to the cylinder,the strawbeater serving to throw the grain and straw downward upon the separating-pan and to spread the straw, a vibrating lifting-rack located in rear of the straw-beater and serving to raise the straw and other coarse material from the separating-pan, and an elevated straw-carrier over the separating-pan and receiving the straw from the said lifting-rack.

2. In a grain-separator, the combination of a threshing-cylinder and concave, a vibrating separating-pan located below the cylinder and concave, the separating-pan receiving the straw and grain from the cylinder and concave, a vibrating lifting-rack located in rear of the point on the separating-pan, which point first receives the straw and grain, and serving to raise the straw and other coarse material from the separating-pan, and an elevated straw-carrier located over the separating-pan and receiving the straw from said lifting-rack.

3. In a grain-separator, the combination with the threshing-cylinder and its concave, of a separating-pan having one end extending under the concave, a revoluble beater in rear and adjacent to the cylinder for throwing the straw and grain down upon the separatingpan, a series of revoluble straw-lifters in rear of the beater and above the separating-pan, the lifters being of gradually-increasing diameters, and the front and rear lifters havin their axes below the intermediate ones, and a vibrating rack arranged between the beater and the first lifter and serving to raise the straw and other coarse material from the pan and guide it onto the said lifters, substantially as herein shown and described.

JACOB F. KOCH.

Witnesses:

HENRY SPRING, GEORGE A. HARVEY. 

